Ventilating-outlet for refrigerator-chambers



(No Model.)

L. SCHA'FFER.

VBNTILATING OUTLET POR REPRIGBRATOR CHAMBERS. No. 425,831. Patented Apr.15, 1890.

. B l-l V////////////7/////////////7/// UNITED STATES PATENT OFFICE.

LOUIS SCHAFFER, OF OAKLAND, CALIFORNIA.

VENTILATING-OUT-LET FOR REFRlGERATOR-CHAMBERS.

SPECIFICATION forming part of Letters Patent No. 425,831, dated April15, 1890. Application led December 30, 1889. Serial No. 335,426. (Nomodel.) i

T0 all whom it may concern:

Be it known that I, Louis SCHAFFER, a citizen of the United States,residing in the city of Oakland, county of Alameda, and State ofCalifornia, have invented certain new and useful Improvements inVentilating-Outlets for Refrigerator-Ohambers, of which the following isa specification.

My invention relates to an improved ven; tilating-outlet anddraft-regulator for refrigerator-chambers, cold-storage rooms, and othersimilar compartments in which meats and other substances and articles ofa perishable nature are kept for future consumption as food; and itconsists in certain construction and combination of parts, producing aventilating-outlet that has for its obj ect to secure constant andeffective circulation of air from the chamber or compartment and tobring the same under control, as hereinafter fully set forth.

The accompanying drawings, forming part of this specification,illustrate the manner in which I produce and apply the said improvementboth to astationary refrigerating-chamber, such as is arranged forbutchers use, and also to a refrigerator-car.

Figure l representsa cross-section in elevation of arefrigerating-chamber. Fig. 2 is a top view of the same chamber with aportion of the roof broken away at one corner to show interiorconstruction, and Fig. 3 a vertical cross-section through a refrigeratorcar to which my improvements are applied.

A indicates the sides or walls of a refrigerating-chamber or similarapartment of any suitable construction, and AX the door at one side.

B is the roof or top, and D is a false ceiling or partition separatingfrom the upper part of the chamber a space C. The partition D slantsfrom the center outward to the four sides of the chamber, and has agutter d at the bottom of the slope all round, with a oonductor Eleading to the outside.

In the center of the top B is an opening F, and under it in the centerof the partition D isan opening G. Between the two openings and about inthe middle of the space O is a deflecting board or plate I-I, so fixedin position that it cuts off direct communication of the interior of thechamber with the air outside through the outlets F G and causes the airto take a circuitous course. The plate stands clear of the surroundingsides, and a passage dx is left all around the edges, through which thelower space and the upper space connect. The plate can be supportedeither from the roof by suspension-rods h h or upon the ceiling by shortposts 7L h. y

To one of the outlets is applied a damper, by which the circulation andoutward flow of air can be regulated from the outside of the chamber.

The construction which I have employed for this regulator is adisk-valve K, movable upon a screw-threaded rod L, and an adjustingmeans consisting of a small sheave m on the disk', a cord belt mx,connecting the sheave with a sheave mzon the outside, and a shaft M,with a hand-wheel MX, the arrangement of these parts being illustratedin the gures of the drawings.

In Fig. l the valve is applied to the lower outlet and works inside thechamber from be low, while in the construction represented in Fig. 3 thevalve Works in the space O against the upper outlet. This changeinposition is a matter of convenience only, as the results are the samein each case. The rod L is fixed in line with the center of the opening,and the valve has a screw-threaded sleeve working on the threaded partof the rod.

.It should be mentioned that other mechanical devices to open and closethe valve and to set it in different positions for reducing orincreasing the circulation could be substituted for the pulleys andbelts.

An opening at one or more sides of the compartment C, with a door O toclose the same, affords access for washing out and cleaning the interiorsurfaces in order to remove the slime and accumulations resulting fromthe deposit of moisture on the walls and partitions. As the passage andoutflow of air through this improved outlet is intended to take placeslowly and continuously, and the exhalations and moisture taken up bythe air in its upward iiow will be deposited in theventilating-compartment, it is necessary to keep the surfaces insidesweet and clean by washing out from time to time, and this is IOOreadily done by turning a hose into the oompartment, the water beingcarried off by the gutter and the conductor before mentioned.

Having thus fully described my invention, what I claim, and desire tosecure by Letters Patent, isf 1. The combination, with a compartment C,arranged above a refrigeratingchamber, having upper and lower wallsprovided with openings F and G, a horizontal partition I-I, located insaid compartment C, with air passages around its edges, and anadjustable valve K,

controlling one of the openings in the walls of the compartment, as setforth.

2. The combination of a refrigeratin g room

